Page 13 - RSBPBrochure

EXPLOSION ISOLATION SYSTEM – BACK PRESSURE FLAP B-FLAP I

B-FLAP I is a mechanical device designed to prevent propagation of flame and pressure
between pieces of technology equipment during explosion. B-FLAP I is, together with
other safety measures, a part of a system that protects technologies intended for
operation in an explosion danger environment.

Economical solution of protection against ADVANTAGES:
propagation of explosion to pipes is the • Wide variety of sizes from DN 100 to DN 800
B-FLAP I back flap.
• Mechanical device that does not need
electrical energy or activation system
• Low pressure losses
• High pressure resistance
B-FLAP I is suitable for prevention • Optional position indicator
of explosion propagation from input • Optional signalization of dirt on flap seating
surface
pipes of filters, reservoirs, cyclones • Simple installation, inspections and
and other devices with danger of maintenance
dust explosions. It is suitable for pipe • Low maintenance costs
sizes from DN 100 to DN 800. • Mechanical shut-down when the flap closes
• Suitable for technologies working with light
metal dust
• Possibility of complementing with the
mechanism RPD (Reducer of Pressure Drop)

THE B-FLAP I INSTALLATION DIAGRAM ON A PIPE
1. Filter In normal operation, the back pressure flap is
2. Fan open due to the flow of air volume inside the
3. Rotary valve piping, or it is kept in the open state by the
4. Back flap mechanism RPD which ensures opening the
flap independently of the air volume flow. This
5. Explosion venting device solution reduces pressure loss in the piping
1 system significantly.
2

In the case of explosion, the back flap is closed
5 and locked, thus preventing the spread of the
explosion to other parts of the equipment or
production technology.

MEETS
ATEX 114
4 NFPA 69 MEETS 2014/34/EU
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